Liquid heater which operates on solar energy or any other energy source



FIG. 1 is a front perspective view of a liquid heater which operates on solar energy or any other energy source, showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front and side perspective view of a liquid heater which operates on solar energy or any other energy source showing a second embodiment of our new design;

FIG. 5 is a rear elevation view of FIG. 4;

FIG. 6 is a top plan view of FIG. 4; and

FIG. 7 is a detailed front perspective view of an evaporator panel, shown separately for clarity of illustration, which is wrapped on the outside of a liquid heater which operates on solar energy or any other energy source, the first embodiment having two evaporator panels, and the second embodiment having three panels. 

The ornamental design for a liquid heater which operates on solar energy or any other energy source, as shown and described. 